K. Kannan and D. Narasimhan and K. Chandrasekhara Rao and R. Ravikumar, Regular Generalized Star Star closed sets in Bitopological Spaces. journal = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology. June 2011, vol. 54(6). 816 - 818 [viewed 20 September 2024]. Available from: https://publications.waset.org/pdf/15440.